DayTronic 5D40 Manuale di istruzioni - Pagina 18

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PLEASE NOTE: Some of the wiring diagrams in this section show only the male connector head-

ers on the rear of the 3000PLUS instrument (also shown in Fig. 3). Each connected wire or jumper

is to be firmly secured to the corresponding SCREW TERMINAL of the terminal block (supplied

with the meter) that plugs into the appropriate header.

Proper shielding of cable wires or twisted pairs—as shown in Figs. 7 through 10—is strongly rec-

ommended to minimize the production of unwanted electrical noise from capacitive and inductive

effects.

In the I/O cabling diagrams below, only the "connector end" of each cable shield is shown, as rep-

resented by a gray circle surrounding either a single wire or a TWISTED PAIR of wires within the

cable. Unless otherwise stated, every shield should be grounded to the appropriate common or

ground terminal only at the connector end. The drain wire tying the connector end of the shield to

common/ground should be as short as possible.

OWER

The 3000PLUS requires a user-supplied external

source of 24 VDC, regulated to ±10%. Nominal con-

sumption is 300 mA; maximum is 350 mA.* The figure

below shows how the positive and negative power

leads are tied, respectively to the rear-panel +24 VDC

and POWER COMMON terminals. Local grounding is

not required.

* An optional 18-W in-line power supply for the 3000PLUS (the

Model 3KPS1) is available from Daytronic. Contact the factory

for more information.

Fig. 6

3000PLUS Power

Connections

3000PLUS

ABLE

ONNECTIONS

5D40 I

WITH

2. C

ONNECTIONS

HIELDING

NOTE: On every normal powerup, the 3000PLUS will

display (for two or three seconds) its firmware version

number ("V x.x") alternating with

24 VDC

POWER

SUPPLY

NSTRUCTION

ANUAL V

. SB.3

3KP40 - 2.1